El Houda NN, Mohammed B, Essaid B, Ahmad I, Ahmad H, Askar S. Multigrid Methods for the Solution of Nonlinear Variational Inequalities. Eur. J. Pure Appl. Math. [Internet]. 2023 Jul. 30 [cited 2023 Dec. 5];16(3):1956-69. Available from: https://ejpam.com/index.php/ejpam/article/view/4835